I am having the same problem with the very latest version of SeeMusic on Windows 10. I attach the image for you to check. All notes moving on the image turn white while the ones moving outside the image keep their color. I noticed this is happening only with the first rectangular shape of notes while with the circular shape all is fine and in that case the notes keep their colors on the image. Thanks for taking care :-)

Hi my friend, with the last version 1.17 for Windows 10 the situation of the rectangular notes previously losing colors when moving on a background image definitely improved BUT there is still a small bug... when you import an image, there is a small rectangular area in the upper part of the screen where the notes, when moving on it, still lose their color :-) Please check the attached screenshots to understand how that rectangular grey area on which the notes turn to grey is indipendent from the scale valor of the same image. Again, everything is working fine with circular shaped notes. This is a problem related with rectangular notes only, but this is for me the fundamental shape I would like to work with :-) I am just waiting for this problem to be solved before passing to the PRO version of your amazing software. Thanks for helping :-)